Chain drag.



A. ROBERTSON.

CHAIN DRAG.

APPLICATION FILED JUNE 8. 1915.

1,183,23, Patented May16,1916.

ALEXANDER ROBERTSON, OF STRATHCLAIR, MANITOBA, CANADA.

CHAIN DRAG.

Specification of Letters Patent.

Patent-ed May JLG, i916.

Application filed June 8, 1915. Serial No. 32,899.

To all fui/tom t may concern.'

Be it known that I, ALEXANDER BonnarsoN, of the town of Strathclair, in the Province of Manitoba, Canada, have invented certain new and useful Improvements in Chain Drags, of which the following is the specication.

The invention relates to improvements in chain drags and the object of' the invention is to provide a farm implement which can be drawn over the land to break up or pulverize the soil surface and prevent excessive evaporation of moisture from the soil.

A further object of the invention is to provide a comparatively light and inexpensive machine which can be easily drawn by two teams of horses and which is of a size that it will cover a large area when drawn over the ground.

W'ith the above objects in view the invention consists essentially in a draw beam mounted on suitable carriage wheels, tongues connected to the beam,vdraft rods detachably secured to the draw beam, sets of alternately disposed rings connected to the rods` double trees above the tongues, diverging pairs of outer'and inner draw links having their forward ends connected to the double trees and the rear ends of the outer links connected to the draw beam, a pulley mounted centrally on the draw beam and a cable connecting the rear ends of the inner links and passing around the pulley, the parts being arranged and constructed as hereinafter more particularly described and later pointed'out in the appended claims.

Figure l represents a plan view of the complete machine. Fig. 2 is an enlarged end view of the same. Fig. 3 is a front elevation of a portion of the machine. Fig. 4 is an enlarged detailed vertical sectional view through the draw beam` the section being taken in the plane denoted by the line X-X Fig. l. Fig. 5 is en enlarged detailed side view of several of the rings.

In the drawing like characters of reference indicate corresponding parts in each ligure.

l represents a draw beam formed from a central section 2 and two removable end sec'- tions 3 and 4., the end sections being connected to the ends. of the central section by means of U-bolts 5. The central and end sections are reinforced by angle ironbars 6 permanently bolted thereto` the angle bars covering the front and top sides of the sections. The applied angle bars project beyond the rear sides of the draw beam sections and are fitted with equally spaced holes 7 for a purpose later described.

S and 9 are tongues having their rear ends y permanently fastened to the draw beam and extending forwardly therefrom. Angle braces l0 and l1 are interposed between the rear ends of the tongues and the draw beam. The draw beam is suitably mounted on carriage wheels l2 and 13 disposed beneath the rear ends of the tongues.

la and l5 are sets of drag rings, in actual practice about five inches in diameter, each set comprising a number of similar rings connected together by means of inserted links 16. The sets of rings are connected to the rear side of the draw beaml by long and short draft rods 17 and 18, these rods having their rear ends connected in any suitable way, such as by an eye, to the front ring of eachset and their forward ends connected te the projecting edges of the angle bars 6 by means of hooks 19, supplied at the forward ends of the rods, and hooked into the openings 7. j

, The sets of rings, as will be observed, al-

ternate behind and throughout the entire length of the draw beam and' the adjacent sets of links overlap, so to speak, so that the ground over which the machine is passed is all worked by the rings.

In order to draw the machine I supply double trees 20 and 21 fitted with the usual single tree 22. These double trees are located above the tongues and are fitted centrally with clevises 23 which connect with rings 24 and 25. The ring 24 is connected by means of a draw link 26 to an eye 27 se cured to the left hand end of the draw beam while the ring 25 is connected by a similar draw link 28 to an eye 29 located at the right hand end of the machine. Inner draw links 30 and 31 are fastened to the rings 24 and 25 and have their rear ends united by a cable 32 passed around a pulley 33 disposed centrally on the beam.

As hereinbefore intimated,l this machine is utilized to break up or pulverize the surface of the land to retain moisture. In order that this may be better understood, I might explain that after a downfall of rain it is a well known fact that as the surface of the land dries, especially in clay soils, there are myriads of minute cracks appear- 1 g in the soil surface. The result is, that while the dried surface soil forms a fair blanket, so to speak, against evaporation for the under surface, still this blanket would be more eective if these cracks were closed. My machine is designed to accom plish this work.

By drawing my machine over the land, the surface of the land is more or less pulverized by the rings with the result that the cracks in the soil are closed. Consequently, the moisture in the under soil is retained. The advantage of this, for growing purposes, is obvious.

From the construction described, it will be seen that the machine is comparatively light, although it covers a large area of ground when in use. Actually, I contemplate making the draw beam some fifty feet long, the end sections being possibly fifteen feet each in length.

By having the end sections so that they can be removed, it is an easy matter to take the machine from place to place, while by making the draft rods detachable, the same can be readily stored or renewed when necessary.

In connection with the draft it is pointed out that this is distributed throughout the length of the draw beam and the draft is even owing to the cable and pulley provided.

What I claim as my invention is l. A chain drag comprising, a draw beam mounted on carriage wheels, a draft connection attached to the beam, alternately arranged long and short draft rods connected to the draw beam and extending rearwardly therefrom and connected drag rings fastened to the rear ends of the rods.

2. A chain drag comprising, a draw beam mounted on carriage wheels, a draft connection attached to the beam, alternately arranged long and short draft rods detachably secured to the draw beam and extending rearwardly therefrom and alternating sets of connected rings secured to the rear end of the draft rods.

3. A chain drag comprising, a draw beam mounted on carriage wheels, tongues secured to the draw beam and extending forwardly therefrom, double trees disposed on the tongues, outer draft links connecting the double trees with the outer ends of the draw beam, inner draft links connected to the double trees, a pulley mounted centrally on the draw beam, a cable passing around the pulley and connecting the inner ends of the inner draft links, alternately arranged long and short draft rods connected to the draw beam and extending rearwardly therefrom and alternating sets of connected drag rings secured to the rear ends of the rods.

Signed at Winnipeg this 10th day of May ALEXANDER ROBERTSON. In the presence of- GERALD S. RoXAUGH, S. SILVERT.

Copies ot this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C." 

